Influence of fear of falling on gait and balance in Parkinson’s disease

Bryant, Mon S.; Rintala, Diana H.; Hou, Jyh Gong; Protas, Elizabeth J.

doi:10.3109/09638288.2013.814722

Cited by 53 publications

(54 citation statements)

References 33 publications

(50 reference statements)

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“…The amount of COP ML ApEn in moderate and sever PD while standing on foam surface with open eyes is so high that could not increase more by eye closure as it might cause clinical instability and falling so these patients show this conservative behavior (not significant increase of COP irregularity) in such a high demand condition but its value in mild PD is not the maximum in same condition so it would increase by going to more difficult situation. Fear of falling could be a reason for such a behavior in individuals with more sever PD(41,42) which high correlation of FES (Falls Efficacy Scale)(43) and H/Y scale scores in this study confirms (p≤0.000, Spearman's Correlation= -0.652). An investigation, using SOT and linear COP measures has demonstrated postural instability in those with PD in first three stages of disease, based on H/Y scale, when in challenging or conflicting sensory conditions necessitating the use of vestibular system(44).…”

supporting

confidence: 79%

Non-linear dynamical feature of center of pressure extracted by approximate entropy in people with various stages of Parkinson’s Disease

Karimi

Mirahmadi

2020

Preprint

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Introduction : Postural instability, one of the most important features of Parkinson's Disease (PD), is associated with increased falls and loss of independence in these population. It is postulated the abilities of individuals to adjust to environmental perturbation for postural control is different in various stages of PD. The aim of current study is to investigate the non-linear dynamical feature of COP in various stages of PD and in different environmental challenges.Method : 38 persons with PD (mild PD =19, moderate PD =6 and sever PD =13) and 33 healthy aged, gender, weight and height matched subjects were asked to stand on force plate in four test conditions included: 1) Rigid Surface with Opened Eyes, 2) Rigid Surface with Closed Eyes, 3) Foam Surface with Opened Eyes, and 4) Foam Surface with Closed Eyes. COP velocity and Approximate Entropy (ApEn) in both Anteroposterior (AP)/Mediolateral (ML) directions were calculated. A Mixed ANOVA 4*2*2 (Group*Vision*Surface) test was applied for statistical analysis .Results : Both COP velocity and COP ML ApEn were significantly higher in participants with PD in comparison to healthy individuals. Moreover, COP ML ApEn increased by eye closure in all studied groups but the amount of this increase was lesser in PD groups. For COP velocity, vision, surface and group interaction was significant in all directions (P ≤ 0.016). For COP ApEn, vision, surface and group interaction (P = 0.002) were statistically meaningful in only ML direction. Conclusion : Balance system irregularity is more in people with PD compared to healthy matched individuals. In addition, their adaptive capacity of the postural control system in response to environmental perturbation is reduced. PD induced complexity of the postural control system is associated with the loss of adaptive behavior that is organized over the confluence of constraints of the individual, environment and task.

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supporting

confidence: 79%

Non-linear dynamical feature of center of pressure extracted by approximate entropy in people with various stages of Parkinson’s Disease

Karimi

Mirahmadi

2020

Preprint

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“…The mean ABC score of the participants was relatively high, and many of the items of the instrument inquire about balance confidence during basic gait and mobility tasks similar to the outcome tasks we were measuring. Gait velocity in preferred-pace forward and backward gait was previously shown to be lower in individuals with PD with fear of falling as measured by the ABC (regardless of fall history), and similarly time to complete the TUG was higher in these individuals, supporting the relevance of the ABC for these basic gait and mobility outcomes (Bryant et al, 2014). Despite not containing turning-specific items, balance confidence was most relevant in predicting TUG, which could potentially be attributed to the presence of turning during this task.…”

Section: Discussionmentioning

confidence: 69%

Investigation of factors impacting mobility and gait in Parkinson disease

Christofoletti

McNeely

Campbell

et al. 2016

Human Movement Science

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Mobility and gait limitations are major issues for people with Parkinson disease (PD). Identification of factors that contribute to these impairments may inform treatment and intervention strategies. In this study we investigated factors that predict mobility and gait impairment in PD. Participants with mild to moderate PD and without dementia (n=114) were tested in one session ‘off’ medication. Mobility measures included the 6-Minute Walk test and Timed-Up-and-Go. Gait velocity was collected in four conditions: forward preferred speed, forward dual task, forward fast as possible and backward walking. The predictors analyzed were age, gender, disease severity, balance, balance confidence, fall history, self-reported physical activity, and executive function. Multiple regression models were used to assess the relationships between predictors and outcomes. The predictors, in different combinations for each outcome measure, explained 55.7% to 66.9% of variability for mobility and 39.5% to 52.8% for gait velocity. Balance was the most relevant factor (explaining up to 54.1% of variance in mobility and up to 45.6% in gait velocity). Balance confidence contributed to a lesser extent (2.0% to 8.2% of variance) in all models. Age explained a small percentage of variance in mobility and gait velocity (up to 2.9%). Executive function explained 3.0% of variance during forward walking only. The strong predictive relationships between balance deficits and mobility and gait impairment suggest targeting balance deficits may be particularly important for improving mobility and gait in people with PD, regardless of an individual’s age, disease severity, fall history, or other demographic features.

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“…Disparities in testing protocols and disease duration between the samples (mean 13 years), compared to the current study (mean 6 years) may account for these observed differences (Sustakoski, Perera, VanSwearingen, Studenski, & Brach, 2015). Although similar investigations of the relationships between the Walk‐12G and performance‐based gait measures are lacking, fear of falling has been associated with slower gait speeds in healthy older adults (Maki, 1997) and people with PD (Bryant, Rintala, Hou, & Protas, 2014; Rochester et al., 2008). Additionally, Curtze et al.…”

Section: Discussionmentioning

confidence: 99%

Patient‐reported and performance‐based measures of walking in mild–moderate Parkinson's disease

et al. 2018

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BackgroundKnowledge of the relationships between patient‐reported and performance‐based walking measures in Parkinson's disease (PD) should inform clinical decision‐making. The Walk‐12G reliably captures perceived walking difficulties but has not been compared to performance‐based walking in laboratory or free‐living settings or across different groups.ObjectivesTo investigate the relationship between patient‐reported walking difficulties (Walk‐12G) and performance‐based walking in laboratory and free‐living conditions and to determine whether the Walk‐12G can distinguish between the subgroups, (i) people with/without PD and (ii) mild/moderate disease stages.MethodsForty‐seven people without and 49 people with PD (Hoehn and Yahr stage II and III) were assessed in relation to patient‐reported walking difficulties (Walk‐12G scale); spatiotemporal gait characteristics (Pace; Rhythm; Asymmetry; Variability; and Postural control) using a laboratory‐based electronic walkway; and walking behavior (mean steps/day and minutes of brisk walking/day) using accelerometers in free‐living conditions.ResultsThe Walk‐12G correlated moderately with the spatiotemporal domain step velocity (r = −0.46) and walking behavior, measured as mean steps/day (r = −0.46). Weaker correlations were observed for step length and minutes spent in brisk walking (r = −0.36 and r = −0.35, respectively). Poor correlations were observed for all other spatiotemporal domains. The Walk‐12G could distinguish between people with and without PD (Effect size, r = 0.82) and between those at mild/moderate disease stages (r = 0.34).ConclusionsPerceived walking difficulties showed weak to moderate associations with performance‐based measures of walking in mild–moderate PD. As the strongest associations were observed for step velocity and walking behavior, targeting these specific gait aspects could improve perceived walking difficulties in daily life.

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Influence of fear of falling on gait and balance in Parkinson’s disease

Cited by 53 publications

References 33 publications

Non-linear dynamical feature of center of pressure extracted by approximate entropy in people with various stages of Parkinson’s Disease

Non-linear dynamical feature of center of pressure extracted by approximate entropy in people with various stages of Parkinson’s Disease

Investigation of factors impacting mobility and gait in Parkinson disease

Patient‐reported and performance‐based measures of walking in mild–moderate Parkinson's disease

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